|Publication number||US8208013 B2|
|Application number||US 11/690,608|
|Publication date||Jun 26, 2012|
|Priority date||Mar 23, 2007|
|Also published as||US20080231691|
|Publication number||11690608, 690608, US 8208013 B2, US 8208013B2, US-B2-8208013, US8208013 B2, US8208013B2|
|Inventors||Brent D. Larson|
|Original Assignee||Honeywell International Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (11), Referenced by (1), Classifications (9), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention generally relates to three-dimensional image displays, and more particularly a system and method of providing user adjustability of displayed three-dimensional images.
Three-dimensional (3D) displays are becoming increasingly popular. Presently, many 3D displays implement stereoscopic techniques to generate a 3D visual display to a user. Such displays, which may be referred to as stereoscopic 3D displays, rely on the well-known stereoscopic imaging technique for creating the illusion of depth in an image. As is generally known, stereoscopy is a method of creating a 3D image from a pair of two-dimensional (2-D) images, in which each of the 2-D images preferably represents the same object or image from a slightly different perspective, such as a right-eye perspective and a left-eye perspective.
When a stereoscopic 3D image is generated by 3D displays, such as the ones generally described above, the details of the perceived depth presentation, and to some extent the comfort level and usability of the depth presentation, may depend upon numerous parameters. For example, the apparent foreshortening, or conversely stretching, of a stereoscopic 3D image along the depth axis may result from a mismatch between stereo camera vergence angles to an object, and from the visual binocular vergence angle to the image of that object. In many stereoscopic display applications, such as a remote telepresence application, or various other precision applications, establishing an operator familiarity for the depth and perception can lead to increased operator proficiency. However, because each operator is typically different, and various platforms may be involved, a 3D display configured for optimal comfort, usability, and proficiency for one user on one platform, may not be optimally comfortable, usable, or proficient for another user on the same or different platform.
Various methods and devices have been developed to address the above-noted drawback of 3D displays. For example, various mechanical and other types of subjective adjustments have been used. Although these adjustments allow a user to subjectively adjust a display such that the displayed image looks good to the user, such adjustments can be unrepeatable and time-consuming, thereby making them inappropriate for many tasks. One-size-fits-all approaches can be even more problematic, leading to potential misinterpretation of depth information or even fatigue and discomfort. The disclosed invention provides for a robust and consistent stereoscopic presentation.
Hence, there is a need for a system and method that enhances the usability and standardization of stereoscopic 3D displays for multiple users across multiple platforms. The present invention addresses at least this need.
In one embodiment, and by way of example only, a stereoscopic display system includes a left-eye perspective image data source, a right-eye perspective image data source, a stereoscopic display, and a parallax controller. The left-eye perspective image data source is configured to supply left-eye image data representative of an image including an object from a left-eye perspective. The right-eye perspective image data source is configured to supply right-eye image data representative of the image including the object from a right-eye perspective. The stereoscopic display is configured to simultaneously display, at a separation distance, the image of the object from the left-eye perspective and the image of the object from the right-eye perspective, whereby a user may view a three-dimensional (3D) representation of the image. The parallax controller is coupled to receive the left-eye image data, the right-eye image data, and an input control signal. The parallax controller is configured, in response to the input control signal, to determine the separation distance, and to command the stereoscopic display to simultaneously display the image from the left-eye perspective and the image from the right-eye perspective, separated by the separation distance.
In another exemplary embodiment, a method of controlling the stereoscopic display of an image including an object comprises simultaneously displaying, at a separation distance, a left-eye perspective view of the image of the object and a right-eye perspective view of the image of the object, and selectively controlling the separation distance.
Other independent features and advantages of the preferred display system and method will become apparent from the following detailed description, taken in conjunction with the accompanying drawings which illustrate, by way of example, the principles of the invention.
Embodiments of the present invention will hereinafter be described in conjunction with the following drawing figures, wherein like numerals denote like elements, and wherein
The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention. Furthermore, there is no intention to be bound by any theory presented in the preceding background or the following detailed description.
Turning now to
The stereoscopic display 106 is configured to generate a 3D representation of image of an image viewable by a viewer 110. The stereoscopic display 106 may be implemented using any one of numerous suitable stereoscopic display devices now known or developed in the future. In the depicted embodiment the stereoscopic display 106 is implemented using coplanar display media. It will be appreciated, however, that the stereoscopic display 106 could also be implemented using non-coplanar stereo display media, such as the display media disclosed in U.S. Pat. No. 6,703,988. No matter the particular display media that are used, the stereoscopic display 106 simultaneously displays an image from the left-eye perspective and an image from the right-eye perspective that are supplied from the left-eye perspective image data source 102 and the right-eye perspective image data source 104, respectively.
The viewer 110 that is viewing the stereoscopic display 106 is typically a binocular viewer 110, having two eyes 112-L, 112-R or the equivalent thereof that are separated by an interpupillary distance (IPD). As
Turning briefly to
Returning once again to
The parallax controller 108 thus provides calibrated control of the separation distance based, at least in part, on the input signal supplied from the user interface 128. Preferably, the user interface 128 allows for the selection of one of a number of discrete input values or settings, which are mapped by the parallax controller to a particular separation distance. It will be appreciated that the user interface 128 may be variously configured, and may be implemented using any one of numerous known user interface devices that are responsive to user input stimuli. For example, the user interface 128 may be implemented using a detent enabled switch having a discrete number of positions. Alternatively, the user interface 128 may be implemented using a set of pushbutton switches, a digital value input switch, an analog knob having a resulting digital output, or a knob with a discrete number of fiducial markings. It will additionally be appreciated that the user interface 128 may be labeled using various types of suitable indicia. For example, the indicia may represent tenths of inches of separation distance, such as separation distance for an infinitely distant object; however, various other linear, non-linear, or non-numeric indicia may be used. In addition, the user interface 128 may be disposed on, or remotely from, the parallax controller 108.
As with other components of the display system 100, the left-eye and right-eye image reference data sources 132, 134 may be implemented using any one of numerous devices, and may additionally be configured to supply the left-eye image reference data and right-eye image reference data, respectively, using various techniques. For example, the left-eye and right-eye image reference data sources 132, 134 may be implemented using digital image or symbol generators, which could be configured to supply the left-eye and right-eye image reference data along with the overall image data. In still other embodiments, the left-eye and right-eye image reference data sources 132, 134 may be implemented as memory storage devices. In such embodiments, the parallax controller 108 may be configured to selectively retrieve the left-eye and right-eye image reference data from the memory storage devices. In yet other embodiments, the image reference data sources 132, 134 could be configured to determine the left-eye and right-eye image reference data by analyzing the left-eye and right-eye perspective image data. Moreover, the image reference data sources 132, 134 may be optionally contained within the parallax controller 108.
In addition to the above, it will be appreciated that various image reference data contributions may be accounted for such as, for example, camera alignment, and display offsets, just to name a few. It will additionally be appreciated that multiple image components may be combined, each having its own image reference data. An example of this latter case would be to adjust the image reference values for symbology, to keep it at or near the effective focus plane of the stereoscopic display 106, while allowing the parallax controller 108 to alter the vergence range and depth scaling of an overlaid 3D scene.
The display system 100 described herein allows multiple users to use multiple pieces of display hardware and quickly return each piece of display hardware to a user's own individualized preferences and compatibilities. It additionally allows a user to vary the display properties, such as providing extra foreshortening or stretching along the depth axis, quickly and simply.
While at least one exemplary embodiment has been presented in the foregoing detailed description of the invention, it should be appreciated that a vast number of variations exist. It should also be appreciated that the exemplary embodiment or exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration of the invention in any way. Rather, the foregoing detailed description will provide those skilled in the art with a convenient road map for implementing an exemplary embodiment of the invention. It being understood that various changes may be made in the function and arrangement of elements described in an exemplary embodiment without departing from the scope of the invention as set forth in the appended claims.
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|U.S. Classification||348/56, 348/53|
|Cooperative Classification||H04N13/0497, H04N13/0425, H04N13/04|
|European Classification||H04N13/04, H04N13/04Y, H04N13/04C|
|Apr 12, 2007||AS||Assignment|
Owner name: HONEYWELL INTERNATIONAL, INC., NEW JERSEY
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LARSON, BRENT D.;REEL/FRAME:019150/0846
Effective date: 20070411
|Nov 24, 2015||FPAY||Fee payment|
Year of fee payment: 4